冻融作用对微生物固化裸土抗风蚀扬尘性能影响的研究进展
Research Progress on Effects of Freeze-Thaw Action on Wind Erosion and Dust Resistance of Microbial Cured Bare Soil
张敏霞 1王亚涛 1牛双建 2蔡宝帅 1张振泉1
作者信息
- 1. 河南理工大学土木工程学院,河南焦作 454150
- 2. 深圳市路桥建设集团有限公司,广东深圳 518000
- 折叠
摘要
微生物诱导碳酸钙沉淀(MICP)改良土的技术,是一种保护生态环境、抗风蚀扬尘的新方法.通过对MICP固化裸土抗风蚀扬尘机理及固化方法的总结,系统分析了固化条件和环境因素对MICP固化裸土抗风蚀扬尘的影响.现有研究表明:冻融作用对MICP固化土体稳定性和物理力学性质的影响,显著增大了裸土的可蚀性.基于上述研究,指出了研究冻融循环对MICP固化裸土抗风蚀扬尘的必要性;最后,提出了微生物固化裸土抗冻融耐久性的研究是MICP技术固土抗风蚀扬尘理论基础的观点.
Abstract
Microbial Induced Calcium Carbonate Precipitation(MICP)technique is a new method to im-prove wind erosion and dust resistance of bare soil and protect the ecological environment.The reinforcing mechanisms and curing methods for bare soil cemented by MICP to improve its properties of wind erosion and dust resistance were summarized.The effects of cured conditions and environmental factors on wind e-rosion and dust resistance of bare soil cemented by MICP were systematically analyzed.The existing find-ings indicated that freeze-thaw action influenced on the structural stability and physical and mechanical properties of bare soil cemented by MICP,which deteriorated the wind erosion and dust resistance of soil.Therefore,the necessity to study the effects of freeze-thaw action on wind erosion and dust resistance of bare soil cemented by MICP were presented.Finally,it was pointed out that durability study on freeze-thaw re-sistance of bare soil cemented by MICP was the theoretical base of stabilizing soil and improving wind ero-sion and dust resistance.
关键词
裸土/MICP技术/抗风蚀扬尘/冻融循环Key words
bare soil/MICP/wind erosion dust resistance/freeze-thaw cycle引用本文复制引用
出版年
2024
NETL
NSTL
万方数据